Okay so I have come into a problem that I do not understand.

The question is :

An Airplane is flying at 250km/h in a direction of 336 degrees. Find the westerly and the northerly components of its velocity.

The issue that I am coming up with is when I draw a right triangle for this equation I do not know how to come up with Angle A

The answer for Angle A is 66 degrees but I have no idea how they come up with that

Thanks in advance